Hertz's Adventure (ハーツ少年の冒険, haatsu shounen no bouken) is a two-part book series found in Trails in the Sky FC.
|Part 1||Chapter 3: "The Black Orbment" during Temp Librarian 2 sidequest||Tratt Plains Road|
|Part 1||Chapter 4: "The Dark Stigma"[note 1]||Library in Hermit's Garden|
- Hertz's Adventure is always accessible once it is first interacted with in the garden.
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